1242320460 has 48 divisors (see below), whose sum is σ = 3484706400. Its totient is φ = 330694144.

The previous prime is 1242320447. The next prime is 1242320479. The reversal of 1242320460 is 640232421.

It is a super-2 number, since 2×1242320460² = 3086720250669223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242320460.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15946 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (72598050).

Almost surely, 2^1242320460 is an apocalyptic number.

1242320460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242320460 is an abundant number, since it is smaller than the sum of its proper divisors (2242385940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242320460 is a wasteful number, since it uses less digits than its factorization.

1242320460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36970 (or 36968 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1242320460 is about 35246.5666413056. The cubic root of 1242320460 is about 1075.0068029135.

Adding to 1242320460 its reverse (640232421), we get a palindrome (1882552881).

The spelling of 1242320460 in words is "one billion, two hundred forty-two million, three hundred twenty thousand, four hundred sixty".